نتایج جستجو برای: ground and mineral water samples

تعداد نتایج: 16976909  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1392

a large number of single research studies on the effects of strategy-based instruction (sbi) in teaching english as a foreign or second language has been conducted so far. however, the lack of a comprehensive meta-analysis targeting the effectiveness of english language sbi is observed. moreover, the findings of experimental studies regarding the context of the english language, proficiency lev...

Journal: :The British journal of nutrition 2005
Stefanie Schoppen Ana M Pérez-Granados Angeles Carbajal Concepción de la Piedra M Pilar Vaquero

This study was designed to investigate the possible effects of consuming Na-rich carbonated mineral water on bone remodelling and urinary mineral excretion in postmenopausal women. Women (n 18) included were amenorrhoeic (>1 year), healthy and not obese (BMI <30 kg/m2). No woman was taking oestrogen replacement therapy, mineral and vitamin supplements, phyto-oestrogens or medications known to a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده فنی و مهندسی 1387

abstract biometric access control is an automatic system that intelligently provides the access of special actions to predefined individuals. it may use one or more unique features of humans, like fingerprint, iris, gesture, 2d and 3d face images. 2d face image is one of the important features with useful and reliable information for recognition of individuals and systems based on this ...

Journal: :journal of the iranian chemical research 0
neelam yugandhar sreedhar electroanalytical lab, department of chemistry, s.v.university, tirupati, a.p., india puthalapattu reddy prasad electroanalytical lab, department of chemistry, s.v.university, tirupati, a.p., india

an efficient protocol for the selective oxidation of primary alcohols to aldehydes withh5io6/v2o5 in ionic liquid [bmpy][pf6] has been developed. high yields of the products, mildreaction conditions and simple experimental procedure make this protocol complementary tothe existing methods. the catalyst can be reused for several times without obvious loss of thecatalytic activity.

Journal: :The Science of the total environment 2004
Elke Fries Wilhelm Püttmann

The behavior of anthropogenic polar organic compounds in ground water during infiltration of river water to ground water was studied at the Oderbruch area on the eastern border of Germany. Additionally, waste water sewage treatment works (STWs) discharging their treated waste water into the Oder River and rain water precipitation from the Oderbruch area were investigated. The study was carried ...

Journal: :Ground water 2001
J Holocher V Matta W Aeschbach-Hertig U Beyerle M Hofer F Peeters R Kipfer

The hydrogeological system of an ecologically sensitive alpine floodplain in the Valle di Blenio, Switzerland, was investigated using hydrochemical and 3H-3He dating methods. Water samples from six wells and from different surface locations were analyzed. The analysis of the concentrations of major ions in conjunction with age determination by the 3H-3He-method allowed the main hydrological pro...

2015
Vivian Rodrigues dos Santos Caroline Rigotto Rodrigo Staggemeier Andréia Dalla Vecchia Andréia Henzel Fernando Rosado Spilki

In Brazil, mineral water is widely consumed and as of yet there have been no studies done in the country that aim to detect enteric viruses in this water source. The aim of this study was to analyze the presence of the human adenovirus (HAdV), the human rotavirus genogroup A (GARV) and the human enterovirus (hEV) in mineral water samples from six different brands that are commercialized in sout...

Journal: :int. journal of mining & geo-engineering 2015
amir salimi mansour ziaii mahdieh hosseinjani zadeh ali amiri sadegh karimpouli

to prospect mineral deposits at regional scale, recognition and classification of hydrothermal alteration zones using remote sensing data is a popular strategy. due to the large number of spectral bands, classification of the hyperspectral data may be negatively affected by the hughes phenomenon. a practical way to handle the hughes problem is preparing a lot of training samples until the size ...

2008
Jonathan B. Martin Paul J. Moore

The depth to which seawater and fresh water circulate through modern carbonate platforms may be estimated with Sr/Sr isotope ratios of dissolved Sr that is enriched through carbonate mineral dissolution and recrystallization. In 23 water samples from onshore San Salvador Island and Long Island, Bahamas, carbonate mineral dissolution and aragonite-to-calcite transformations elevate Sr concentrat...

2016
Merve Yeşilbaş Jean-François Boily

Atmospheric water vapour interacting with hydrophilic mineral surfaces can produce water films of various thicknesses and structures. In this work we show that mineral particle size controls water loadings achieved by water vapour deposition on 21 contrasting mineral samples exposed to atmospheres of up to ~16 Torr water (70% relative humidity at 25 °C). Submicrometer-sized particles hosted up ...

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